Malware Analysis Report

2025-01-18 21:40

Sample ID 240415-hvt47ahc25
Target f089e121bd206ec93e6583651d2e559c_JaffaCakes118
SHA256 ca4ac1db528fea101b2ae61719719bf806aca32ae06bd47082492735c3f76651
Tags
adware persistence stealer
score
8/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
8/10

SHA256

ca4ac1db528fea101b2ae61719719bf806aca32ae06bd47082492735c3f76651

Threat Level: Likely malicious

The file f089e121bd206ec93e6583651d2e559c_JaffaCakes118 was found to be: Likely malicious.

Malicious Activity Summary

adware persistence stealer

Adds policy Run key to start application

Checks computer location settings

Loads dropped DLL

Deletes itself

Executes dropped EXE

Installs/modifies Browser Helper Object

Drops file in System32 directory

Unsigned PE

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Modifies Internet Explorer settings

Modifies registry class

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-15 07:03

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-15 07:03

Reported

2024-04-15 07:06

Platform

win7-20240221-en

Max time kernel

122s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f089e121bd206ec93e6583651d2e559c_JaffaCakes118.exe"

Signatures

Adds policy Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\explorer\run C:\Windows\SysWOW64\issearch.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\issearch.exe = "issearch.exe" C:\Windows\SysWOW64\issearch.exe N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\issearch.exe N/A

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{f4d74aaa-a178-4463-846b-b4bc87a024e0} C:\Windows\SysWOW64\issearch.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{f4d74aaa-a178-4463-846b-b4bc87a024e0}\ C:\Windows\SysWOW64\issearch.exe N/A
Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects C:\Windows\SysWOW64\issearch.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\issearch.exe C:\Users\Admin\AppData\Local\Temp\f089e121bd206ec93e6583651d2e559c_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\ixt0.dll C:\Windows\SysWOW64\issearch.exe N/A

Enumerates physical storage devices

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000\Software\Microsoft\Internet Explorer\Main C:\Windows\SysWOW64\issearch.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000\Software\Microsoft\Internet Explorer\SearchUrl C:\Windows\SysWOW64\issearch.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000\Software\Microsoft\Internet Explorer\Search C:\Windows\SysWOW64\issearch.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\Classes\Wow6432Node\CLSID\{f4d74aaa-a178-4463-846b-b4bc87a024e0} C:\Windows\SysWOW64\issearch.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{f4d74aaa-a178-4463-846b-b4bc87a024e0}\ C:\Windows\SysWOW64\issearch.exe N/A
Key created \REGISTRY\MACHINE\Software\Classes\Wow6432Node\CLSID\{f4d74aaa-a178-4463-846b-b4bc87a024e0}\InprocServer32 C:\Windows\SysWOW64\issearch.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{f4d74aaa-a178-4463-846b-b4bc87a024e0}\InprocServer32\ = "C:\\Windows\\SysWow64\\ixt0.dll" C:\Windows\SysWOW64\issearch.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{f4d74aaa-a178-4463-846b-b4bc87a024e0}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\issearch.exe N/A
Key created \REGISTRY\MACHINE\Software\Classes\Wow6432Node\CLSID C:\Windows\SysWOW64\issearch.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\f089e121bd206ec93e6583651d2e559c_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\f089e121bd206ec93e6583651d2e559c_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f089e121bd206ec93e6583651d2e559c_JaffaCakes118.exe"

C:\Windows\SysWOW64\issearch.exe

C:\Windows\system32\issearch.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\F089E1~1.EXE > nul

Network

N/A

Files

\Windows\SysWOW64\issearch.exe

MD5 d836def18dceef3f90a3d2b799c67928
SHA1 955ddbced9ac5044d5e7176ad9e3822dbfdae45e
SHA256 d34effe2f829136a42d3b41dc6755d203f8666d28a180413abea2d35688b2287
SHA512 2a2034e194b69036c08d68dbfe90cf23f2a3473c267fc37857fa6deeb875bc004dfa1258172e6eef9d81d6d045afa52d22a4fd34c5410db8a9a5eb5ffd220511

\Windows\SysWOW64\ixt0.dll

MD5 d13c32c6526290e9ab18527e4ca385db
SHA1 dded4844285c8291ce9bd130ec8c1ef897641072
SHA256 d954f8c4ea7cb2e9c58408bfd1316516187f77908e2369e70c2888f1517f4e64
SHA512 64fb0c14bcf3fdf7a4a7433049fa3cdbdb43e7fe6f000f6d26ab1058596ff580897dee58f7478c4c435664a76aa685d484d9dd0d47dc9ac9f66f1b249d47c9a7

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-15 07:03

Reported

2024-04-15 07:06

Platform

win10v2004-20240412-en

Max time kernel

93s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f089e121bd206ec93e6583651d2e559c_JaffaCakes118.exe"

Signatures

Adds policy Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\explorer\run C:\Windows\SysWOW64\issearch.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\issearch.exe = "issearch.exe" C:\Windows\SysWOW64\issearch.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\f089e121bd206ec93e6583651d2e559c_JaffaCakes118.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\issearch.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\issearch.exe N/A

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{f4d74aaa-a178-4463-846b-b4bc87a024e0} C:\Windows\SysWOW64\issearch.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{f4d74aaa-a178-4463-846b-b4bc87a024e0}\ C:\Windows\SysWOW64\issearch.exe N/A
Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects C:\Windows\SysWOW64\issearch.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\issearch.exe C:\Users\Admin\AppData\Local\Temp\f089e121bd206ec93e6583651d2e559c_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\ixt0.dll C:\Windows\SysWOW64\issearch.exe N/A

Enumerates physical storage devices

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Software\Microsoft\Internet Explorer\Search C:\Windows\SysWOW64\issearch.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Software\Microsoft\Internet Explorer\SearchUrl C:\Windows\SysWOW64\issearch.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Software\Microsoft\Internet Explorer\Main C:\Windows\SysWOW64\issearch.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f4d74aaa-a178-4463-846b-b4bc87a024e0}\InprocServer32\ = "C:\\Windows\\SysWow64\\ixt0.dll" C:\Windows\SysWOW64\issearch.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f4d74aaa-a178-4463-846b-b4bc87a024e0}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\issearch.exe N/A
Key created \REGISTRY\MACHINE\Software\Classes\WOW6432Node\CLSID C:\Windows\SysWOW64\issearch.exe N/A
Key created \REGISTRY\MACHINE\Software\Classes\WOW6432Node\CLSID\{f4d74aaa-a178-4463-846b-b4bc87a024e0} C:\Windows\SysWOW64\issearch.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f4d74aaa-a178-4463-846b-b4bc87a024e0}\ C:\Windows\SysWOW64\issearch.exe N/A
Key created \REGISTRY\MACHINE\Software\Classes\WOW6432Node\CLSID\{f4d74aaa-a178-4463-846b-b4bc87a024e0}\InprocServer32 C:\Windows\SysWOW64\issearch.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\f089e121bd206ec93e6583651d2e559c_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\f089e121bd206ec93e6583651d2e559c_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f089e121bd206ec93e6583651d2e559c_JaffaCakes118.exe"

C:\Windows\SysWOW64\issearch.exe

C:\Windows\system32\issearch.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\F089E1~1.EXE > nul

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 81.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 203.197.17.2.in-addr.arpa udp

Files

C:\Windows\SysWOW64\issearch.exe

MD5 d836def18dceef3f90a3d2b799c67928
SHA1 955ddbced9ac5044d5e7176ad9e3822dbfdae45e
SHA256 d34effe2f829136a42d3b41dc6755d203f8666d28a180413abea2d35688b2287
SHA512 2a2034e194b69036c08d68dbfe90cf23f2a3473c267fc37857fa6deeb875bc004dfa1258172e6eef9d81d6d045afa52d22a4fd34c5410db8a9a5eb5ffd220511

C:\Windows\SysWOW64\ixt0.dll

MD5 d13c32c6526290e9ab18527e4ca385db
SHA1 dded4844285c8291ce9bd130ec8c1ef897641072
SHA256 d954f8c4ea7cb2e9c58408bfd1316516187f77908e2369e70c2888f1517f4e64
SHA512 64fb0c14bcf3fdf7a4a7433049fa3cdbdb43e7fe6f000f6d26ab1058596ff580897dee58f7478c4c435664a76aa685d484d9dd0d47dc9ac9f66f1b249d47c9a7